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rudim1950
10 years ago

Hello,

for everything in the world, especially in aviation, there is, of course, a formula or several that are then linked.

Manufacturers deliver the values to customers (formerly in page-long tables, today in the form of software). There are worldwide standar procedures for start and landing (keywords “Freedom of Change” or “Gleitwinkel”).

How to calculate the starting speed? For a standard day with a standard atmosphere, you can also calculate the v(start) yourself. A plane flies when the lift is at least as large as the weight.

So, in simplified terms:

v(start) = Root of departure weight divided by ((air density/2) * boost coefficient * wing area)

buoyancy, max. The manufacturer (for A380, for example, 1.4 (dimensionless), 560.000 kg and 846 m2), air density of the weather service (default is 1.225 kg/m3) supplies the flyweight and wing area.

SpitfireFan
10 years ago

This cannot be calculated in general, it flows in temperature, air pressure, weather, wind, tire pressure, aircraft type, built-in engines, payload, their distribution, the surface of the runway and its rise, water injection of the engines, etc.

SpitfireFan
10 years ago
Reply to  SpitfireFan

I forgot the folding position